Reinforcement valve for preventing backflow in drain trap

ABSTRACT

The present invention relates to a reinforcement valve for preventing a backflow in a drain trap, which can be additionally installed inside a drain trap, which can perform the air backflow phenomenon pre-contributing to the quality of the quality of the drain trap and to performance improvement thereof, and which always has the best backflow blocking function regardless of a strong air pressure generated inside the drain trap and any change thereof. A conventional drain trap has a water gathering portion (20) formed beneath a trap body (10); an inflow-side drain tube (30) and a discharged-side drain tube (40) are connected to one side and the other side thereof, respectively, such that draining occurs therethrough; a blocking membrane (60) is configured between the water inflow opening (31) And the water discharge opening (41); and a water drain hole (51) is bored between the blocking membrane (60) and the bottom surface inside the trap body (10). Th e present invention is configured by installing a backflow-preventing reinforcement valve (100) on the front side of the blocking membrane (60), in which the water drain hole (51) is formed, such that, when water is drained from the corresponding household, the same is automatically opened by the water pressure, thereby allowing water to drain, and, when water draining is completed, the same is automatically closed by self-weight, thereby guaranteeing, through control, that, even if a strong air flow is introduced into the drain trap, no backflow of air occurs.

TECHNICAL FIELD

This invention can greatly contribute to the quality and performanceimprovement of the drainage trap in that it can be added to the interiorof the drainage trap and can strengthen the performance of the airbackflow prevention function required for the drainage trap. Inaddition, this invention is about the reinforcement valves forpreventing backflow of the drain trap, which always perform the bestbackflow shutoff function regardless of the strong air pressuregenerated inside the drain pipe (incoming or exiting the air) and itschanges.

BACKGROUND TECHNOLOGY

Drainage traps are usually installed to prevent harmful insects that mayenter through a drainpipe, and odour caused by decomposition ordecomposition of the dirt and grease attached to the inner wall of thedrainpipe. drainage traps are one of the essential parts of thedrainpipes of multi-generation houses such as apartments and villas(bathroom drains, sink drain pipes, laundry drain pipes, etc.).

The basic structure of this drainage trap forms a water gatheringportion (20) on the underside of the trap body (10), where a certainamount of water may be pooled. One side and the other on the upper sideof the water gathering portion (20) above mentioned includes the waterinlet (31) within the drain pipe (30) to allow the drainage of water toflow in. In addition, a drainpipe (40) containing a water outlet (41) isconnected to allow the inflow of water to be discharged outwards. Inparticular, the forward part of the water inlet (31) above mentioned issubmerged to a certain depth from the surface of the water held in thewater gathering portion (20). The structure commonly consists of abarrier (60) with a constant size of the water drain hole (51) open onthe lower part of the blockage that is simultaneously submerged.

To explain the basic principle related to prevention of backflow ofdrainage traps with this structure, drainage traps allow water to flowout naturally during drainage, but after drainage of water, a certainamount of water automatically thickens in the water gathering portionand a barrier is installed. This is a structure in which, in principle,backflow of air containing odour is automatically blocked afterdrainage.

However, drainage traps may present the phenomenon of air entering theinterior of the drainage trap or the phenomenon of the internal air ofthe drainage trap escaping outwards in the process of rapid drainage ofwater. This can be especially serious if it is a drainage trap installedin a drainage system that is installed in a multi-generation house, suchas an apartment complex, that is occupied by several generations (seediagram 8).

Specifically, multiple drains (earth pipes) from large diameter tubes toeach generation are combined in multi-stage. This can cause rapidchanges in airflow and pressure within the drainage trap connected tothe branch. Especially in the morning and evening hours, when water isused a lot for each generation, a sudden higher pressure may occur atsome point, resulting in more pressure changes within the drainage trap.

This phenomenon causes damage that invoke unwanted odors to rise,causing serious turbulence in the water gathering portion. It bears theproblem of going against the basic principle of drainage traps, which isto hold water together, blocking the reverse flow of air.

In other words, drainage traps cannot in principle reverse the flow ofair containing odors because the water is stagnant and partly obscuredby a blocking membrane, but if a momentary high-pressure air flow(incoming or exiting air) occurs, the water resistance (inflowing orexiting of the water) will be severely leaked and the water will not besubmerged and the air exposed to the outside will be reversed.

It may have little effect on the pressure inside the drainage trap dueto the lack of generations and the small number of detached houses orvillas with very few generations. However, in cases where pressurechanges are extreme (such as apartments with large households,multi-generation houses, villas, officetels, buildings, etc.) due to thelarge number of generations and very large use of water, the problem ofbackflow odour may continue to emerge even though ordinary drainagetraps have been installed.

To address this, it is common to resolve a particular device forpreventing reflux in drainage traps by installing additional devices ordevices for preventing individual reversals for each generation ofdrains.

However, the installation of individual backflow prevention tools ordevices on each of the multiple drains in each generation will result inother problems, such as unnecessary expense and huge waste of time andlabor due to installation, as well as hampering the function of smoothdrainage. This is why a fundamental alternative is desperately needed.

CONTENT OF THE INVENTION Task to be Solved

Thus, in this invention, unlike the previous practice where changes inair pressure in a drainage trap are caused by severe changes in the airpressure due to various causes (the characteristics of amulti-generation apartment complex), the automatic adjustment inresponse to changes in air pressure is newly intervened so as not to beopened arbitrarily except for the drainage of water, thus providing aground-breaking method for reverse flow of bad odor.

Means of Task Resolution

The usual drainage traps for this invention to achieve the abovetechnical tasks were as follows: First, the water gathering portion (20)were formed at the bottom of the trap body (10). One side and the otherwere connected to the inflow-side drain tube (30) and thedischarged-side drain tube (40). A blocking membrane (60) wasconstructed between the water inflow opening (31) mentioned above andthe water discharge opening (41). Between the inside floor of theblocking membrane (60) mentioned above and trap body (10), a water drainhole (51) was drilled. In this ordinary drainage trap, the waterblocking membrane (60) in front of which the water drain hole (51) wasformed was automatically opened according to the pressure of the waterwhen the water was drained from the corresponding generation, allowingdrainage but automatically closing by the weight of the water afterdrainage was completed. A backflow-preventing reinforcement valve (100)developed in this invention was closed and controlled so that strong airflow into the drainage trap does not cause a reflux of air.

Effect of the Invention

The backflow-preventing reinforcement valve of this invention draintrap, such as this one, is opened by water pressure at the time ofdrainage to allow drainage whereas after drainage, there is no change inair pressure and no strong pressure is introduced into the drain trap(A). In addition, regardless of any changes in air, such as highpressure or high air intake, the closing effect of thebackflow-preventing reinforcement valve (100) remains secured. Thisensures more complete functions to prevent backflow of air, includingodour thus making this invention a highly anticipated.

BRIEF DESCRIPTION OF THE DRAWING

Drawing 1 shows the internal structure of a typical drainage trap.

Drawing 2 shows the structure of the drainage trap with the name of thebackflow-preventing reinforcement valve (100) for reverse flowprevention as proposed in this invention.

Drawing 3 shows the structure diagram showing an example of thebackflow-preventing reinforcement valve (100) for reverse flowprevention provided in this invention

Drawing 4 shows another example of the backflow-preventing reinforcementvalve (100) is shown in this invention.

Drawing 5 shows another example of the backflow-preventing reinforcementvalve (100) is shown in this invention.

Drawing 6 presents a perspective view of the Drawing 5

Drawing 7 is a sectional perspective view of the Drawing 6

Drawing 8 is a reference drawing to multi-stage installation of branchpipe and drainage traps in standpipes.

SPECIFICATION TO CARRY OUT THE INVENTION

On the underside of the trap body (10), a water gathering portion (20),which can hold a certain amount of water, is formed. On one side of theupper part of the water gathering portion (20) mentioned above and onthe other side, the inflow-side drain tube (30) containing a waterinflow opening (31) and a discharged-side drain tube (40) containing awater discharge opening (41) are connected so that it can be dischargedfrom the outside. Between the above water inflow opening (31) and thewater discharge opening (41), there is a blocking membrane (60) lockedto a certain depth from the surface of the water in the water gatheringportion (20), and a water drain hole (51) of a certain size is drilledbetween the inner floor of the blocking membrane (60) and the trap body(10). Accordingly, it is normally a drainage trap that prevents reverseflow of odour due to the water that has been steamed in the watergathering portion (20) above.

On the front of the blocking membrane (60) formed by the water drainhole (51) mentioned above was characterized by the installation of anadditional backflow-preventing reinforcement valve (100), whichautomatically opens according to the pressure of the water when thewater is drained from the corresponding generation, allowing drainagebut automatically closes by the gravity after drainage was completed, toprevent a strong flow of air into the drain trap from appearing.

Drawings “70” and “71” of the attached drawings shall be those forinspection tools and their lid joining screws that are opened and usedwhen internal repair or inspection is required.

In addition, the backflow-preventing reinforcement valve (100) mentionedabove may be made of various materials such as metal or plastic.Individual support joint (61, 101) drilled with the hinge holes (61 a,101 a) shall be constructed at the blocking membrane (60) of the upperbody and the corresponding location and each support joint shall befitted together thus to complete hinge combination structure, a hingepin (102) is inserted to allow free rotational motion.

Therefore, the backflow-preventing reinforcement valve (100) allowsdrainage by automatically opening the water pressure when water entersthrough the water inflow opening (31) mentioned above, but when drainageis finished, the water drain hole (51) is blocked by the magneticpressure, thus preventing the backflow of air containing the odor fromentering the drain trap (A) more completely.

In other words, when strong air pressure was introduced into thedrainage trap (A), the pooled water would severely flow for the waterresistance to be overcame and the air (including the odour) was oftenreversed.

If the backflow-preventing reinforcement valve (100) mentioned above isinstalled to automatically block the water drain hole (51) as shownabove, the pressure of the water drain trap (A) will push the pressureof the backflow-preventing reinforcement valve (100) to make it moretight. For this reason, it is a useful invention that, even if strongair pressure is introduced into the drainage trap (A), backflow of aircannot appear in principle, and the damage caused by backflow can alsobe prevented more effectively.

However, the backflow-preventing reinforcement valve (100) is closedmore strongly by the pressure in the drain trap and cannot show areverse flow.

Conversely, if the strong suction force is exerted by the flow of airflowing outward (internal to external), rather than by the introductionof air pressure;

Depending on the suction force, the backflow-preventing reinforcementvalve (100) is temporarily opened to the suction force, and refluxphenomenon can occur.

Therefore, in this invention, the backflow-preventing reinforcementvalve (100) can be conceived as mentioned above.

As illustrated in drawing 3, the outer perimeter is formed with a coverof consistent thickness (111) and configured with the empty vent (110)therein continuous volume of inner cavity (112) assigned to the enclosedinterior.

At the top of the upper section of the empty vent (110) mentioned above,the suction force groove (120) allows the suction force to affect theinner cavity (112) of the backflow-preventing reinforcement valve (100)mentioned above.

The design of the lower part of the upper part of the empty vent (110)may be more desirable if the structure is designed with a water inletgroove (130) that provides a certain amount of water to flow into theinner cavity (112), depending on the suction force.

In this case, if a strong suction force of air in the drain trap (A)affects the inlet force groove (120) at the top of the empty vent (110)above mentioned, the weight of the backflow-preventing reinforcementvalve (100) for preventing reflux will be increased through the bottomof the water inflow groove (130), thus increasing the weight of thebackflow-preventing reinforcement valve (100), while also offsetting theintake force of the water from flowing more tightly back into thebackflow-preventing reinforcement valve (100).

Even if a strong suction force of air is generated within the drainagetrap (A), the possibilities of the backflow-preventing reinforcementvalve (100) to be opened and the reflux of the air including the odourto be occurred are fundamentally and completely prevented in thisinvention.

In the end, the backflow-preventing reinforcement valve (100) isconfigured as a rapid empty vent (110) assigned with an inner cavity(112). The structure of that is formed by placing the suction forcegroove (120) and the water inflow groove (130) respectively at the topand bottom of the valve.

The backflow-preventing reinforcement valve (100) is opened only upondrainage. Regardless of the absence of changes in the air pressure afterdrainage as well as a sudden amount of strong air flow is introduced tothe drainage trap (A) or a strong suction force of the air occurs, theclosing effect of the backflow-preventing reinforcement valve (100)always remains to be maintained and prevent potential damages of odourexposure from the fundamental phase.

Furthermore, the suction force groove (120) formed on the front top ofthe empty vent (110) and the water inflow groove (130) formed at thebottom of the suction force groove (120) allocated to the inner cavity(112) was formed to form larger water inflow groove (130) than thecorresponding suction force groove (120) to make the water flow throughthe stream flow groove (130) more efficient.

Inside the suction force groove (120) allocated to the inner cavity(112) mentioned above and water flow groove (130) are blocked by a pairof compartment membrane (140,140′) to create a water suction inducedsection (141), which induces the suction force, which is more effectiveand faster to achieve

In addition, if a compartment membrane (140,140′) is closed between thesuction force groove (120) and the water inflow grooves (130) to inducethe suction force and to form a water suction induced section (141) forbetter water reduction,

On the upper and lower parts of the empty vent (110), more than one ofadditional water inlet (140) and the air hole (150) are to be installedbesides the existence of suction force groove (120) mentioned above andwater inflow groove (130). The water inlet and the air hole areconstructed to the rest of the inner cavity (112) inside the empty vent(110).

As a certain amount of water is filled in the remaining inner cavity(112) inside the empty vent (110), excluding the water suction inducedsection (141), the weight is added to prevent the opening ofbackflow-preventing reinforcement valve (100). At the same time, whenthe reinforcement valve (100) for preventing backflow opens due to waterpressure during drainage, the weight is reduced to increase theefficiency of the opening. After drainage, when the reinforcement valve(100) for prevention of backflow is closed, the water is re-inflated andthe closing function can be performed more effectively by increasing theweight.

In other words, the water outlet (140) and the air hole (150) may act inpart when a high pressure air is introduced or a strong intake force ofair is generated, but rather, when the backflow-preventing reinforcementvalve (100) is opened and closed, water is discharged (intensified andbuoyant) and the inflow (increased) to maximize the heat and closingefficiency.

As described, the backflow-preventing reinforcement valve of thedrainage trap of this invention is opened by water pressure duringdrainage, allowing drainage.

Regardless of any changes in air pressure after the drainage has beencompleted, as well as the introduction of strong pressure into thedrainage trap (A), or the occurrence of strong intake force of air,

Since the closing function of the backflow-preventing reinforcementvalve (100) mentioned above can always be maintained, it is a usefulinvention that can be equipped with the counterflow prevention functionof air containing odour more perfectly.

Moreover, it is a useful invention to prevent damage caused by odour byautomatically sucking the corresponding amount of water from thepressure to maintain the closing force, especially when the pressure isapplied.

EXPLANATION ON DRAWINGS

10: a trap body 20: a water gathering portion 31: Inlet 30: Inflow SideDrainage 41: Water drain 40: District pipe on the discharge side 20:Materials 60: Cut-off 51: Water Drainage Hall 100: a backflow-preventingreinforcement valve

1. On the underside of the trap body (10), a water gathering portion(20) is formed that can hold a certain amount of water. On one side andthe other side of the water gathering (20) mentioned above, aninflow-side drain tube (30) containing a water inflow opening (31) toallow drainage of water to flow in is connected with the discharged-sidedrain tube (40) containing water discharge opening (41) to allow theinflow of water to be discharged outwards. In addition, between thewater inflow opening (31) mentioned above and the water dischargeopening (41) consists of a blocking membrane (60) locked to a certaindepth from the surface of the water pooled in the water gatheringportion (20). Between the inner floor of the blocking membrane (60) andthe trap body (10), a water drain hole (51) with a certain size isdrilled, so in principle, it is impossible to reverse the odor due tothe water gushed in the water gathering portion (20) mentioned above. Onthe front of the blocking membrane (60) mentioned in which the abovewater drain hole (51) is formed, the water is automatically openedaccording to the water pressure when the water is drained from thecorresponding generation. An additional reinforcement valve (100) isinstalled to prevent backflow, which allows drainage but automaticallycloses by the gravity even if a strong airflow is introduced afterdrainage and controls the flow of air into the drainage trap to preventthe backflow of air.
 2. In the claim 1, The backflow-preventingreinforcement valve (100) may be made of metal or plastic material andis constructed with the support (61,101) drilled with a hinge hole (61a, 101 a) at the top and at the frontside of the blocking membrane (60)at the corresponding location. With the counteracting effect from eachother constructed, a hinge pin (102) is inserted to enable freerotational motion.
 3. In the claim 1, In the backflow-preventingreinforcement valve (100), The outer perimeter is formed with a cover(111) with a constant thickness and consists of an empty vent (110),which is allocated a constant volume of free space (112). The suctionforce groove (120) was then drilled in the upper part of the empty vent(110) to allow the suction force to affect the inner cavity (112) of thereinforcing valve (100) for preventing foul backflow. In addition, atthe bottom of the upper part of the empty vent (110) mentioned above,water inflow grooves (130) that provide a path for a certain amount ofwater to flow into the inner cavity (112) according to the to thesuction force were formed. These are the features of thebackflow-preventing reinforcement valve in the drain trap.
 4. In theclaim 3, Among the suction force groove (120) and the water inflowgrooves (130) formed at the front top of the empty vent (110) where theinner cavity (112) mentioned above is allocated, Compared to the suctionforce flow (120) mentioned above, water inflow grooves (130) were formedin larger sizes. In doing so, this backflow-preventing reinforcementvalve gained the feature of allowing water to flow more effectivelythrough the water inflow grooves (130) mentioned above.
 5. In the claim3, On the inner side between the above suction force groove (120) andthe water inflow groove (130), A backflow-preventing reinforcement valveof drainage traps is characterized by the formation of a water suctioninduced section (141), which induces suction power by blocking some ofthe inner cavity (112) with a demarcation membrane (140).
 6. In theclaim 5, In case of a demarcation membrane (140) blocking between thesuction force groove (120) and the water inflow groove (130) to form awater suction induced section (141), which induces the suction force,the feature of the backflow-preventing reinforcement valve in the draintrap acts like below. On the upper and lower parts of the front sectionof the empty vent (110), there exists one or more water outlet (140) andair hole (150) are added to secure the path through the remainder of theempty vent (110) of the inner cavity (112) except the suction forcegroove (120) and the water inflow grooves (130).